But in the chat, one person from support told me that I have 90 days for clean up the bonus. I choosed titan because was the only house that not tell about time limit for clean up the bonus, in the pokerstrategy site, and the he told me that.

I felt that I was cheated, but it is true about that 90 days, and the $150 bonus expire, can I have the gains? And when can withdraw that?

TitanPoker has never had a time limit for the bonus expiry, and still shouldn't. Perhaps the Titan support worker you talked to wasn't properly informed.

The starting capital also doesn't expire after a certain period of time. So you can withdraw whatever you have gained from it after clearing the bonus (I believe the limit is 2,500 Points that you need to collect)